What option is best for keeping stool soft long term while treating a fissure but avoiding dependence (colace, miralax, (polyethylene glycol) or magnesium oxide)?

Try drinking lots. Of water with prune juice, eating more fruits and veggies and exercising daily. Take care! http://health.Howstuffworks.Com/wellness/natural-medicine/home-remedies/home-remedies-for-constipation.Htm.